Faq And Troubleshooting; Battery And Power - BenQ Joybook JBR22 User Manual

JBR22.fm Page 35 Friday, April 15, 2005 9:59 PM

FAQ and Troubleshooting

The following are descriptions of situations that you may encounter during use of
the Joybook, along with basic troubleshooting steps. If you are not able to resolve
the issue, immediately contact a BenQ service center for assistance.
General
What is Joybook? What are the differences between Joybooks and traditional
notebooks?
BenQ calls it Joybook, because BenQ has combined entertainment and stylish
design with traditional notebook's functions. For example, enhanced 3D process-
ing power for gaming and movie viewing. With Joybook, you will be able to enjoy
the most exciting audio and visual experience ever!
What is a Wireless LAN (WLAN)?
A WLAN is a type of Local Area Network (LAN) that uses high frequency radio
waves rather than wires to communicate and transmit data among nodes. It is a
flexible data communication system implemented as an extension to, or as an
alternative for, a wired LAN within a building or campus.
What is IEEE 802.11b/g?
IEEE 802.11b is a technical specification issued by the Institute of Electrical and
Electronic Engineers (IEEE) that defines the operation of 2.4 GHz, 11 Mbps/
54Mbps, Direct Sequence Spread Spectrum Wireless Local Area Networks
(WLANs).

Battery and Power

My Joybook won't start up with the battery installed?
• Make sure the battery is properly installed.
• Make sure that the battery is fully charged. If this does not work, consult your
BenQ dealer.
What should be the run time of a battery?
Run time will vary on individual Joybooks, based on the application programs
being used (i.e. high graphics, games), the number of times data is saved or
retrieved from the hard drive and/or optical drive, the memory of notebook, and
chemistry and capacity of the battery. A "realistic" average run-time for a battery
is 1.5 to 3 hours. Again run time will vary on applications being used and individ-
ual notebooks.
What should I do with the battery if I will not use my Joybook for a longtime?
Recharge the battery or discharge it to about 40% full, and then store it in a dry
place at about 15°C to 25°C. Extremely high or low temperature will shorten the
life of battery.
When charging the battery, the battery indicator on Joybook suggests that the bat-
tery is fully charged. When I check it from the Power Manager in Windows, the
battery level is only about 95%-99%. Why?
It is the result of the battery protection design of Joybook. When the battery indi-
cator on Joybook is off, it means that the battery has reached a saturated voltage:
95%-99%. At this moment, the voltage difference detected by Joybook is very
small, so it will reduce the charging current to prevent overcharging the battery
with excess current or voltage, which will damage the battery. Moreover, in order
to protect the battery from exposing to high voltage and current for a long time
during charging, the battery has been equipped with a protection circuit that will
charge the battery at low current in the final phase.
How come my Joybook is not fully charged even after a full night charge?
Make sure that the Joybook is receiving power. Is the cord plugged in correctly?
When the battery is installed in the computer and it is properly plugged in to an
AC outlet, check to see if the battery level icon is showing a charge sign. If this
does not fix the problem, the battery, the power source in the notebook, or the AC
power cord may be defective. Consult your BenQ dealer for help and mainte-
nance.
What should I do if the battery gets hot in my Joybook?
Take the battery out and let it cool down. If the problem persists once it is inserted
back into the Joybook, the battery could be defective and it may need to be
replaced.
Why is it that my battery Life seems to last shorter and shorter on a full recharge?
It is natural for Lithium (L-ion) batteries to decrease in capacity with the number
of times they have been recharged. In other words, the more times you have
recharged your battery, the lower the battery capability drops. Therefore, it is nor-
mal for your battery to have a shorter operation time over time.
FAQ and Troubleshooting 35